Home / 20,359.34-28,083.47-13,460.48

Finding the Fourth Proportional to 20,359.34, 28,083.47 and 13,460.48

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Solution

The fourth proportional to 20,359.34, 28,083.47 and 13,460.48 is: 18,567.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.34 : 28,083.47 = 13,460.48 : x
  2. Step 2: Convert to fraction form
    20,359.34/28,083.47 = 13,460.48/x
  3. Step 3: Cross multiply
    20,359.34x = 28,083.47 × 13,460.48
  4. Step 4: Simplify right side
    20,359.34x = 378,016,986.27
  5. Step 5: Solve for x
    x = 378,016,986.27/20,359.34
  6. Step 6: Final answer
    x = 18,567.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.